Sliding clasp fastener



Jan. 22, 1946. L` PARKgN SLIDING CLASP FASTENER o`rigina1 Filed Jan. 26,1942 -FicaZ.,

Parkin Resaued Jan. 22, 1946 j 'l Re. 22,715

Leslie Parkin, Nottingham, England, assignor to United-Carr FastenerCorporation, Cambridge,

Mass.

Original No. 2.341,331, dated February 8, 1944,

Serial No.,428,213, January 26, 1942. Application for reissuev February9. 1944, Serial No.

This invention relates to sliding clasp fasteners and more particularlyto fasteners of thistype wherein for the purpose of obtaining a quickopening movement th Stringer tapes are adapted to be separated by alateral pull on one of the tapea It is an object of the presentinvention to prolvide means whereby the slider may be readily removedfrom one of the stringer tapes when lt is desired to separate them by alateral pull.

According to the present invention a sliding -clasp fastener is providedat the upper end of one of the tapes with a stop or end member whichnormally prevents vthe complete removal of the slider from the tape butwhich is adapted to be automatically displaced by continued pressure ofthe slider against it. The stop may comprise resilient means adapted tobe overcome by a. continued pull on the slider in a direction to openthe fastener. I

To enable the invention to be fully understood it will now be describedwith reference to the accompanying drawing. in which:

Fig. 1 -is a pian view of the upper end of a slidingiclasp fastenerhaving a stop according to one embodimentof the invention arranged onone of the stringer tapes;

Fig. 2 is a section on the line 2--2 of Fig. 1;

Fig. 3 is a similar view to Fig. 2 but showing a modified form of stop;

Fig. 4 is a view similar to Fig. 1 but with the slider pulled toreleased position;

Fig. 5 is a section taken on the line 5 -5 of Fig. l; and

Fig. 6 is a section taken on the line 8--6 of rig. 1.

As shown in the accompanying drawing, I and .l2 are stringe'r tapeshaving beaded edges 3 to Iwhich are clamped fastener elements I adaptedto .be controlled by a slider 5 in a manner now well known to thoseskilled in the art. An end piece In Great Britain February 24, 1941 8Claims. -(Cl. 24-205)l Il and a humped portion Il projecting through theaperture above vthe face of the plate 8.

- In this embodiment of the invention, when the slider is operated toclose the fastener it isvpulled in the normal way, bythe pull tab shownin dotted lines (Figs. 1 and 4), until it engages the humped portionv Iland from this position the slider may be operated to open the fasteneras desired. If

, the fastener is to be prepared for separation of the tapes by alateral pull independently of the' slider, a continued pull is'applied-upwardly on the slider in a direction against the hump ilsumcient to cause the slider to flatten the humped portion Il and passover it, the ends I2, Il being forced outwardly beneath the plate 8. Theslider may thus be freed from the tape I, after the slider passes beyondthe stop member 8, by pulling the tape laterally outwardly from the edgeof the slider, as shown in Fig. 4.

According to the modification shown in Fig. 3` the'resilient stopcomprises a U-shaped strip of spring-metal, the lower arm l5 beinginserted beneath the plate il*L and the upper arm I6 extending above theplate and having a humped portion I1 adapted to act as a resilient stopfor the slider. The free end I8 of the arm i5' projects keeper for thefree end of the arm IB.

The operation is similar to that of the stop described with reference toFig. 1, Ythe hump I1 serving as a stop for the slider but being adaptedto erbe flattened upon continued pressure bein exerted against it by theslider.

I claim: 1. A top stop member for a sliding clasp fastener whichincludes a pair of stringers. series of fasteners on adjacent edges ofthe stringers, a slider operable longitudinally relative to saidstringers over the fasteners to engage and disengage them, said top stopmember presenting an automatically depressible hump portion in the vpath of the slider to engage the slider and to limit ordinary movementthereof when pulled thereagainst, and saidhump portion being depressedby said slider when a strong pull is exerted thereon thereby permittingsaid slider to pass to a posithereto adjacent to the upper-most fastenerelement of the tape, and comprising a U-shaped sheet of metal (Fig. 6)the plate-like arms 8, 9 of which are secured by rivets lil to oppositesides of the tape. The plate 8 is formed with an aperture i l. A stripof' spring metal is assembled with the plate I, the strip comprisingflat, end portions I2, Il extending beneath the edges of the aperturepass to a position relativg tosaid fasteners and v stringers whereby thefasteners may be quickly separated from the closing end.

f3. A top stop member for a sliding clasp fastener which includes a pairof stringere, series of fasteners on adjacent edges of'the stringere, aslider Voperable longitudinally relative to said stringers over thefasteners to engage and disengage them.'l said top stop memberpresenting a separate bumped spring assembled therewith in line with thefastener elements on one'stringerv and in the path of the slider'y tolimit ordinary movement of the slider whenpulled thereagainst, and saidhump portion being depressed bysaid` slider when a. strong pull isexerted thereon thereby permitting said slider to pass to a positionrelative to said fasteners and stringere whereby the fasteners may bequickly separated from the closing end.

4. In a'sllding clasp fastener of the 'class de scrlbed, a pair ofstringers, series of fasteners on adjacent edges of the'stringers, aslider operable longitudinally relative to said stringers over thefasteners to engg'e and disengage them and a member attached to onestringer at the closing end of the stringers for limiting the closingmovement of said slider, said member presenting an automaticallydepressible hump portion in the path of ,the slider to limit ordinarymovement of the slider whenpulled thereagains't, and said and an endpiece on the other stringer constructed and arranged to permit movementof the of a stringer and a bumped spring element held in assembledrelation to that stringer by the sheet metal part in the path of theslider to limit ordinary movement of the slider when pulledthereagainst, and said hump portion of tbe spring being depressed bysaid slider when a strong pull is exerted thereon thereby permittingsaid slider to pass to a position relative to said fasteners andstringers whereby the fasteners may be quickly f separated from theclosing end in the manner described.

7. In a sliding clasp fastener of the class descri-bed, a pair ofstrlngers, a series of fasteners;

on adjacent edges of the stringere, a slider member operablelongitudinally relative to saidv one of said members in a position to bein the hump portion being depressed by said slider when a strong pull isexerted thereon thereby permitting said slider to pass toa positionrelative to said fasteners and stringers whereby the' fastenersy may bequickly separated from the closing end and a" slider stopping projectionpresented by one of the stringere to prevent the slider from beingdisassembled from the stringer when the fasteners are separated.

' 5. In a sliding clasp fastener of the class described, a pair ofstringere, series of fasteners on adJacent edges of the stringers, aslider operable longitudinally relative to said stringere over thefasteners to engage and disengage them and a member attached to'onestringer at the closing end oi' the stringere for limiting theclosing movement of said slider, said member presenting an automaticallydepressible hump portion in the path of the slider to limit ordinarymovement of the slider when pulled thereagainst, and said hump portionbeing depressed by said slider when a strong pull is exerted thereonthereby permit-c lmay be quickly separated from the closing end path ofthe other member to engage therewith and limit ordinary movement of theslider member when pulled thereagainst, said yieldable spring portionbeing adapted to be displaced by the other member when a strong pull isexerted on said slider member, permitting said slider member to pass apositionv relative to said fasteners and end member whereby thefasteners may be quickly separated from the closing end.

8. In a sliding clasp fastener of the class described, a pairofstrlngers, a'series of fasteners on adjacent edges ofthe stringere. aslider member operable longitudinally relative to `said stringers overthe fasteners to engage and' disengage them, a stop member on one ofsaid strlngers for limiting the closing movement of said slider member,one of said members having a leaf. spring presenting an automaticallydepressible portion in the path ofthe other member to limit ordinarymovement of the slider` member when pulled thereagainst, saiddepressible por- LEsLra' runners.A

